ChemInform Abstract: Formation, Structure and Magnetic Properties of GdFe11Re.

The structural and magnetic properties of the ternary GdFe11Re compound were investigated by means of X-ray diffraction analysis and magnetic measurement. GdFe11Re crystallizes in a tetragonal structure with space group 14/mmm. The lattice parameters are a=8.5339 Angstrom and c=4.7603 Angstrom. The results of Rietveld refinement of powder XRD data revealed that the Re atoms preferentially occupy the 8i site. This is basically due to the atomic size effect dominating over the enthalpy effect. Magnetic measurements indicated that the GdFe11Re compound is ferromagnetic with a Curie temperature of 518 K. It was found that the easy magnetization direction of GdFe11Re is along the c-axis. The saturation moment and the magnetocrystalline anisotropy field of the GdFe11Re compound at 5 K are 16.28 mu(B)/f.u. and 56.4 kOe, respectively. (C) 2002 Elsevier Science B.V. All rights reserved.